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JohnBean B 500 - Page 81

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81
K CODE
C10 410 C10 420 C10 430
DESCRIPTION
C10 410: No signal output from transducer 1 (behind main shaft)
C10 420: No signal output from transducer 2 (front of main shaft)
C10 430: No signal output from both transducers
EXPLANATION
There are two preloaded transducers connected to the Integrated Display. When the
shaft spin with the wheel assembly, the imbalance produces vibration on these tran-
sducers. The transducers convert the pressure change to electrical signals and pass
these signals to the microprocessor for imbalance calculations. If the microprocessor
can not get these signals, the balancer does not work.
ACTION
Check the cable and connectors from transducers to microprocessor control board.
Re-torque the transducers. A transducer is bad and can not output signal.
C CODE
C103, C104
K CODE
C10 705 C10 706 C10 707
C10 708
DESCRIPTION
C10705: Optoencoder, voltage on shunt resistor is less 2.50 V, too low.
C10706:Optoencoder, voltage on shunt resistor is above 4.30 V, too high.
C10707:Optoencoder, the current through LED less 16 mA, too low.
C10708:Optoencoder, the current through LED above 20 mA, too high.
EXPLANATION
The Optoencoder circuit is mainly used to obtain the encoder signal from the encoder
ring attached on main shaft. The Microprocessor continuously monitors the encoder. If
a problem occurs on the encoder circuit, one of these diagnostic codes will be di-
splayed
ACTION
Check the cable and connector on the encoder board. Go to C74, C75. Clean the en-
coder band. If the balancer will spin, balance a wheel and stop, the encoder is ok.
C CODE
C74, C75

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